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27138384 = 243271319109
BaseRepresentation
bin110011110000…
…1100101010000
31220001202212100
41213201211100
523421412014
62405400400
7446446440
oct147414520
956052770
1027138384
1114356519
129109100
135812620
143866120
1525b1009
hex19e1950

27138384 has 240 divisors, whose sum is σ = 99299200. Its totient is φ = 6718464.

The previous prime is 27138383. The next prime is 27138389. The reversal of 27138384 is 48383172.

27138384 is a `hidden beast` number, since 271 + 3 + 8 + 384 = 666.

It is a super-2 number, since 2×271383842 = 1472983772262912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27138383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248922 + ... + 249030.

Almost surely, 227138384 is an apocalyptic number.

27138384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27138384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49649600).

27138384 is an abundant number, since it is smaller than the sum of its proper divisors (72160816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27138384 is a wasteful number, since it uses less digits than its factorization.

27138384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 153 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 27138384 is about 5209.4514106574. The cubic root of 27138384 is about 300.5116601834.

The spelling of 27138384 in words is "twenty-seven million, one hundred thirty-eight thousand, three hundred eighty-four".